4wd

What is Four wheel drive (4WD) or 4X4 technology in vehicles?


 | 3 minutes read

(4WD) or 4X4 meaning and working explained

Four-wheel drive (4WD) vehicle is a vehicle that is capable of transferring engine power to all the four wheels. More often, people call these vehicles as 4X4 cars.

In this terminology, the first digit represents the number of axle-ends on a vehicle while the second digit represents the number of wheels which directly receive engine power.



Thus, 4X4 means:

4: Number of axle-ends on a vehicle (2 ends of front axle + 2 ends of rear axle)

4: Number of wheels that directly receive power from the engine



The wheels which receive power from the engine are also called driving wheels. Therefore, one can say that a four-wheel drive (4WD) or 4X4 vehicle contains 4 driving wheels.

According to the way, torque is transferred between axles, four-wheel drive systems are of following types:

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